28154002156 has 12 divisors (see below), whose sum is σ = 56308004368. Its totient is φ = 12066000912.

The previous prime is 28154002133. The next prime is 28154002171. The reversal of 28154002156 is 65120045182.

It is a happy number.

28154002156 is an admirable number.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502750011 + ... + 502750066.

Almost surely, 2^28154002156 is an apocalyptic number.

It is an amenable number.

28154002156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28154002156 is a wasteful number, since it uses less digits than its factorization.

28154002156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005500088 (or 1005500086 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 28154002156 in words is "twenty-eight billion, one hundred fifty-four million, two thousand, one hundred fifty-six".